http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김상우(Sangwoo Kim),송정용(Jungyong Song),이주열(Jooyoul Lee),도칠훈(Chilhoon Doh) 한국자동차공학회 2022 한국자동차공학회 부문종합 학술대회 Vol.2022 No.6
It is essential to design for safety as demand for lithium-ion batteries increases. In particular, thermal runaway is being dealt with in depth in the field of battery safety, and various designs are being examined in the industry. In this paper, 1D modeling is presented to make it possible to predict temperature until it reaches the battery thermal runaway state. Heat-Wait Search (HWS) test was conducted utilizing Accelerated Rate Calorimetry (ARC) equipment, and the external heat and the amount of heat generated by the battery cell itself were measured. Convection heat transfer caused by external heat and exothermic reaction spurred by internal reaction of cell and cell Equivalent Circuit Model (ECM) were 1D modeled through AMESIM S/W. In order to reduce the gap with the experimental value, the heat transfer coefficient value was corrected in the HWS section, and the internal parameters were readjusted in the exothermic reaction section. It is possible to quickly review the state of cell thermal runaway in accordance with external heating conditions, initial temperature, SOC and current conditions by utilizing the implemented 1D modeling. It is expected that the safety margin of prototypes can be considered in advance based on this study.